Cast At War! Heather & Terry Dubrow Snub 'RHOC' Pals At Party

Real Housewives of Orange County star Heather Dubrow and her Botched husband Terry sure know how to ruin a good party!

Over the weekend, former RHOC star Gretchen Rossi, 37, threw a fashion show for the launch of her new handbag collection and RadarOnline.com exclusively learned from an insider that the after-party became a nightmare when the Dubrows went out of their way to cause drama!

"After Gretchen's show, a whole group of people went to eat sushi and celebrate. When they arrived at the restaurant they were all shocked because their table of ten people was right next to where Heather and Terry were seated."

According to an eyewitness, "Neither Heather nor Terry got up to go and say hi to any of them." Instead, they pretended that they did not know the crowd that consisted of several of this season's RHOC beauties!

"It was beyond shady," said the source.

As RadarOnline.com reported, Heather and Rossi got into a back and forth cat-fight recently that ended when Rossi slammed her former friend on social media.

"When Heather and Terry were done eating they went way out of their way to completely avoid the group. They were right next to them near the entrance, but chose to sneak out the back door without saying a word to anyone," the source said.